package com.firstexample.demo;

import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Arrays;

@SpringBootApplication
public class DemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}
@Bean
public CommandLineRunner commandLineRunner(ApplicationContext ac){
	    return args ->{
	        System.out.println("由Spring Boot注册的所有Bean：");
	        String[] beanNames = ac.getBeanDefinitionNames();
	        Arrays.sort(beanNames);
	        for(String beanName : beanNames){
	            System.out.println(beanNames);
            }
        };
}


@RestController
     class HelloController{
	    @RequestMapping("/")
    public String index() {
            return "你好，spring boot!";
        }
}
}
